diff --git a/fbpcs/data_processing/id_combiner/DataValidation.cpp b/fbpcs/data_processing/id_combiner/DataValidation.cpp
index 497518d97..06c1c63ab 100644
--- a/fbpcs/data_processing/id_combiner/DataValidation.cpp
+++ b/fbpcs/data_processing/id_combiner/DataValidation.cpp
@@ -60,7 +60,7 @@ void validateCsvData(std::istream& dataFile) {
     for (auto& v : rowVec) {
       try {
         folly::to<std::uint64_t>(v);
-      } catch (std::exception& e) {
+      } catch (std::exception&) {
         XLOG(FATAL) << v << " failed to parse to int";
       }
     }